关于ffmpeg:如何使用-pyav-抽取-Iframe-关键帧

关键帧有 I 帧、P 帧、B 帧

咱们关注的是 I 帧，因为 I 帧少，P 帧和 B 帧太太多了

应用 pyav 获取 I 帧，能够用上面的代码：

样例代码：

import av
import av.datasets


content = av.datasets.curated("pexels/time-lapse-video-of-night-sky-857195.mp4")
with av.open(content) as container:
    # Signal that we only want to look at keyframes.
    stream = container.streams.video[0]
    stream.codec_context.skip_frame = "NONKEY"

    for frame in container.decode(stream):

        print(frame)

        # We use `frame.pts` as `frame.index` won't make must sense with the `skip_frame`.
        frame.to_image().save("night-sky.{:04d}.jpg".format(frame.pts),
            quality=80,
        )

视频数据处理办法！对于开源软件 FFmpeg 视频抽帧的学习